Key Stage 3 (KS3) Geography Practice Test

Question: 1 / 400

Which of the following can lead to the generation of a tsunami?

Extreme winds in the ocean

Volcanic eruptions

A tsunami is typically generated by significant geological events, most commonly undersea earthquakes. Volcanic eruptions can also lead to tsunamis, especially when an explosive eruption causes a sudden displacement of water, such as when a volcanic island collapses into the sea or when the eruption displaces a large volume of water. This rapid movement of water creates powerful waves that can travel across ocean basins, resulting in a tsunami.

While extreme winds can create large ocean waves, they do not generate tsunamis, as the mechanisms driving tsunami formation are fundamentally different. Similarly, changes in ocean salinity and heavy rainfall do not have the necessary energy or displacement effects to create tsunami waves. Understanding the processes that lead to tsunamis clarifies why volcanic eruptions are a key factor in their generation.

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Changes in ocean salinity

Heavy rainfall

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